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// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn_native/d3d12/RenderPassBuilderD3D12.h"
#include "dawn_native/Format.h"
#include "dawn_native/d3d12/CommandBufferD3D12.h"
#include "dawn_native/d3d12/Forward.h"
#include "dawn_native/d3d12/TextureD3D12.h"
#include "dawn_native/dawn_platform.h"
namespace dawn_native::d3d12 {
namespace {
D3D12_RENDER_PASS_BEGINNING_ACCESS_TYPE D3D12BeginningAccessType(wgpu::LoadOp loadOp) {
switch (loadOp) {
case wgpu::LoadOp::Clear:
return D3D12_RENDER_PASS_BEGINNING_ACCESS_TYPE_CLEAR;
case wgpu::LoadOp::Load:
return D3D12_RENDER_PASS_BEGINNING_ACCESS_TYPE_PRESERVE;
}
}
D3D12_RENDER_PASS_ENDING_ACCESS_TYPE D3D12EndingAccessType(wgpu::StoreOp storeOp) {
switch (storeOp) {
case wgpu::StoreOp::Discard:
return D3D12_RENDER_PASS_ENDING_ACCESS_TYPE_DISCARD;
case wgpu::StoreOp::Store:
return D3D12_RENDER_PASS_ENDING_ACCESS_TYPE_PRESERVE;
}
}
D3D12_RENDER_PASS_ENDING_ACCESS_RESOLVE_PARAMETERS D3D12EndingAccessResolveParameters(
wgpu::StoreOp storeOp,
TextureView* resolveSource,
TextureView* resolveDestination) {
D3D12_RENDER_PASS_ENDING_ACCESS_RESOLVE_PARAMETERS resolveParameters;
resolveParameters.Format = resolveDestination->GetD3D12Format();
resolveParameters.pSrcResource =
ToBackend(resolveSource->GetTexture())->GetD3D12Resource();
resolveParameters.pDstResource =
ToBackend(resolveDestination->GetTexture())->GetD3D12Resource();
// Clear or preserve the resolve source.
if (storeOp == wgpu::StoreOp::Discard) {
resolveParameters.PreserveResolveSource = false;
} else if (storeOp == wgpu::StoreOp::Store) {
resolveParameters.PreserveResolveSource = true;
}
// RESOLVE_MODE_AVERAGE is only valid for non-integer formats.
// TODO: Investigate and determine how integer format resolves should work in WebGPU.
switch (resolveDestination->GetFormat().GetAspectInfo(Aspect::Color).baseType) {
case wgpu::TextureComponentType::Sint:
case wgpu::TextureComponentType::Uint:
resolveParameters.ResolveMode = D3D12_RESOLVE_MODE_MAX;
break;
case wgpu::TextureComponentType::Float:
resolveParameters.ResolveMode = D3D12_RESOLVE_MODE_AVERAGE;
break;
case wgpu::TextureComponentType::DepthComparison:
UNREACHABLE();
}
resolveParameters.SubresourceCount = 1;
return resolveParameters;
}
D3D12_RENDER_PASS_ENDING_ACCESS_RESOLVE_SUBRESOURCE_PARAMETERS
D3D12EndingAccessResolveSubresourceParameters(TextureView* resolveDestination) {
D3D12_RENDER_PASS_ENDING_ACCESS_RESOLVE_SUBRESOURCE_PARAMETERS subresourceParameters;
Texture* resolveDestinationTexture = ToBackend(resolveDestination->GetTexture());
ASSERT(resolveDestinationTexture->GetFormat().aspects == Aspect::Color);
subresourceParameters.DstX = 0;
subresourceParameters.DstY = 0;
subresourceParameters.SrcSubresource = 0;
subresourceParameters.DstSubresource = resolveDestinationTexture->GetSubresourceIndex(
resolveDestination->GetBaseMipLevel(), resolveDestination->GetBaseArrayLayer(),
Aspect::Color);
// Resolving a specified sub-rect is only valid on hardware that supports sample
// positions. This means even {0, 0, width, height} would be invalid if unsupported. To
// avoid this, we assume sub-rect resolves never work by setting them to all zeros or
// "empty" to resolve the entire region.
subresourceParameters.SrcRect = {0, 0, 0, 0};
return subresourceParameters;
}
} // anonymous namespace
RenderPassBuilder::RenderPassBuilder(bool hasUAV) {
if (hasUAV) {
mRenderPassFlags = D3D12_RENDER_PASS_FLAG_ALLOW_UAV_WRITES;
}
}
void RenderPassBuilder::SetRenderTargetView(ColorAttachmentIndex attachmentIndex,
D3D12_CPU_DESCRIPTOR_HANDLE baseDescriptor) {
ASSERT(mColorAttachmentCount < kMaxColorAttachmentsTyped);
mRenderTargetViews[attachmentIndex] = baseDescriptor;
mRenderPassRenderTargetDescriptors[attachmentIndex].cpuDescriptor = baseDescriptor;
mColorAttachmentCount++;
}
void RenderPassBuilder::SetDepthStencilView(D3D12_CPU_DESCRIPTOR_HANDLE baseDescriptor) {
mRenderPassDepthStencilDesc.cpuDescriptor = baseDescriptor;
}
ColorAttachmentIndex RenderPassBuilder::GetColorAttachmentCount() const {
return mColorAttachmentCount;
}
bool RenderPassBuilder::HasDepth() const {
return mHasDepth;
}
ityp::span<ColorAttachmentIndex, const D3D12_RENDER_PASS_RENDER_TARGET_DESC>
RenderPassBuilder::GetRenderPassRenderTargetDescriptors() const {
return {mRenderPassRenderTargetDescriptors.data(), mColorAttachmentCount};
}
const D3D12_RENDER_PASS_DEPTH_STENCIL_DESC*
RenderPassBuilder::GetRenderPassDepthStencilDescriptor() const {
return &mRenderPassDepthStencilDesc;
}
D3D12_RENDER_PASS_FLAGS RenderPassBuilder::GetRenderPassFlags() const {
return mRenderPassFlags;
}
const D3D12_CPU_DESCRIPTOR_HANDLE* RenderPassBuilder::GetRenderTargetViews() const {
return mRenderTargetViews.data();
}
void RenderPassBuilder::SetRenderTargetBeginningAccess(ColorAttachmentIndex attachment,
wgpu::LoadOp loadOp,
dawn_native::Color clearColor,
DXGI_FORMAT format) {
mRenderPassRenderTargetDescriptors[attachment].BeginningAccess.Type =
D3D12BeginningAccessType(loadOp);
if (loadOp == wgpu::LoadOp::Clear) {
mRenderPassRenderTargetDescriptors[attachment]
.BeginningAccess.Clear.ClearValue.Color[0] = clearColor.r;
mRenderPassRenderTargetDescriptors[attachment]
.BeginningAccess.Clear.ClearValue.Color[1] = clearColor.g;
mRenderPassRenderTargetDescriptors[attachment]
.BeginningAccess.Clear.ClearValue.Color[2] = clearColor.b;
mRenderPassRenderTargetDescriptors[attachment]
.BeginningAccess.Clear.ClearValue.Color[3] = clearColor.a;
mRenderPassRenderTargetDescriptors[attachment].BeginningAccess.Clear.ClearValue.Format =
format;
}
}
void RenderPassBuilder::SetRenderTargetEndingAccess(ColorAttachmentIndex attachment,
wgpu::StoreOp storeOp) {
mRenderPassRenderTargetDescriptors[attachment].EndingAccess.Type =
D3D12EndingAccessType(storeOp);
}
void RenderPassBuilder::SetRenderTargetEndingAccessResolve(ColorAttachmentIndex attachment,
wgpu::StoreOp storeOp,
TextureView* resolveSource,
TextureView* resolveDestination) {
mRenderPassRenderTargetDescriptors[attachment].EndingAccess.Type =
D3D12_RENDER_PASS_ENDING_ACCESS_TYPE_RESOLVE;
mRenderPassRenderTargetDescriptors[attachment].EndingAccess.Resolve =
D3D12EndingAccessResolveParameters(storeOp, resolveSource, resolveDestination);
mSubresourceParams[attachment] =
D3D12EndingAccessResolveSubresourceParameters(resolveDestination);
mRenderPassRenderTargetDescriptors[attachment].EndingAccess.Resolve.pSubresourceParameters =
&mSubresourceParams[attachment];
}
void RenderPassBuilder::SetDepthAccess(wgpu::LoadOp loadOp,
wgpu::StoreOp storeOp,
float clearDepth,
DXGI_FORMAT format) {
mHasDepth = true;
mRenderPassDepthStencilDesc.DepthBeginningAccess.Type = D3D12BeginningAccessType(loadOp);
if (loadOp == wgpu::LoadOp::Clear) {
mRenderPassDepthStencilDesc.DepthBeginningAccess.Clear.ClearValue.DepthStencil.Depth =
clearDepth;
mRenderPassDepthStencilDesc.DepthBeginningAccess.Clear.ClearValue.Format = format;
}
mRenderPassDepthStencilDesc.DepthEndingAccess.Type = D3D12EndingAccessType(storeOp);
}
void RenderPassBuilder::SetStencilAccess(wgpu::LoadOp loadOp,
wgpu::StoreOp storeOp,
uint8_t clearStencil,
DXGI_FORMAT format) {
mRenderPassDepthStencilDesc.StencilBeginningAccess.Type = D3D12BeginningAccessType(loadOp);
if (loadOp == wgpu::LoadOp::Clear) {
mRenderPassDepthStencilDesc.StencilBeginningAccess.Clear.ClearValue.DepthStencil
.Stencil = clearStencil;
mRenderPassDepthStencilDesc.StencilBeginningAccess.Clear.ClearValue.Format = format;
}
mRenderPassDepthStencilDesc.StencilEndingAccess.Type = D3D12EndingAccessType(storeOp);
}
void RenderPassBuilder::SetDepthNoAccess() {
mRenderPassDepthStencilDesc.DepthBeginningAccess.Type =
D3D12_RENDER_PASS_BEGINNING_ACCESS_TYPE_NO_ACCESS;
mRenderPassDepthStencilDesc.DepthEndingAccess.Type =
D3D12_RENDER_PASS_ENDING_ACCESS_TYPE_NO_ACCESS;
}
void RenderPassBuilder::SetDepthStencilNoAccess() {
SetDepthNoAccess();
SetStencilNoAccess();
}
void RenderPassBuilder::SetStencilNoAccess() {
mRenderPassDepthStencilDesc.StencilBeginningAccess.Type =
D3D12_RENDER_PASS_BEGINNING_ACCESS_TYPE_NO_ACCESS;
mRenderPassDepthStencilDesc.StencilEndingAccess.Type =
D3D12_RENDER_PASS_ENDING_ACCESS_TYPE_NO_ACCESS;
}
} // namespace dawn_native::d3d12